Extensive explanation of the suggestion: Basicly an announcement in the chat when someone either creates a thread or replies to 1. (Should probably exclude unbann threads and other threads that are meant for staff only.) If there's alot of new threads which causes the chat to be spammed too hard with these notifications, an alternative would be a "new threads" box just like the "new profile posts" box.

Why we should implement this: I have seen this on other forums and really liked it because you can keep up with what happens on the forum alot easier as now you would have to scroll down the whole page and check in every "sub-forum" if there's a new thread.
Besides I think it the chat would be alot more active as people are gonna discuss threads with eachother in the chat aswell. So it makes the forum come to life aswell .